react中使用echarts的bmap

要使用echarts的bmap，需要引入bmap和百度地图api的ak。

1、引入bmap：（不引入虽然不会报错，但地图不会显示）

import React, {useRef, useEffect} from 'react';//import echarts from 'echarts/lib/echarts';
import * as echarts from 'echarts';
import 'echarts/extension/bmap/bmap';  //引入bmap
//let exfn = ()=><div>页面</div>;export default function Page() {const mapRef = useRef();useEffect(() => {//var chartDom = document.getElementById('main');//var myChart = echarts.init(chartDom);var option;var data = [{name: '海门', value: 9},{name: '鄂尔多斯', value: 12},{name: '招远', value: 12},{name: '舟山', value: 12},{name: '齐齐哈尔', value: 14},{name: '盐城', value: 15},{name: '赤峰', value: 16},{name: '青岛', value: 18},{name: '乳山', value: 18},{name: '金昌', value: 19},{name: '泉州', value: 21},{name: '莱西', value: 21},{name: '日照', value: 21},{name: '胶南', value: 22},{name: '南通', value: 23},{name: '拉萨', value: 24},{name: '云浮', value: 24},{name: '梅州', value: 25},{name: '文登', value: 25},{name: '上海', value: 25},{name: '攀枝花', value: 25},{name: '威海', value: 25},{name: '承德', value: 25},{name: '厦门', value: 26},{name: '汕尾', value: 26},{name: '潮州', value: 26},{name: '丹东', value: 27},{name: '太仓', value: 27},{name: '曲靖', value: 27},{name: '烟台', value: 28},{name: '福州', value: 29},{name: '瓦房店', value: 30},{name: '即墨', value: 30},{name: '抚顺', value: 31},{name: '玉溪', value: 31},{name: '张家口', value: 31},{name: '阳泉', value: 31},{name: '莱州', value: 32},{name: '湖州', value: 32},{name: '汕头', value: 32},{name: '昆山', value: 33},{name: '宁波', value: 33},{name: '湛江', value: 33},{name: '揭阳', value: 34},{name: '荣成', value: 34},{name: '连云港', value: 35},{name: '葫芦岛', value: 35},{name: '常熟', value: 36},{name: '东莞', value: 36},{name: '河源', value: 36},{name: '淮安', value: 36},{name: '泰州', value: 36},{name: '南宁', value: 37},{name: '营口', value: 37},{name: '惠州', value: 37},{name: '江阴', value: 37},{name: '蓬莱', value: 37},{name: '韶关', value: 38},{name: '嘉峪关', value: 38},{name: '广州', value: 38},{name: '延安', value: 38},{name: '太原', value: 39},{name: '清远', value: 39},{name: '中山', value: 39},{name: '昆明', value: 39},{name: '寿光', value: 40},{name: '盘锦', value: 40},{name: '长治', value: 41},{name: '深圳', value: 41},{name: '珠海', value: 42},{name: '宿迁', value: 43},{name: '咸阳', value: 43},{name: '铜川', value: 44},{name: '平度', value: 44},{name: '佛山', value: 44},{name: '海口', value: 44},{name: '江门', value: 45},{name: '章丘', value: 45},{name: '肇庆', value: 46},{name: '大连', value: 47},{name: '临汾', value: 47},{name: '吴江', value: 47},{name: '石嘴山', value: 49},{name: '沈阳', value: 50},{name: '苏州', value: 50},{name: '茂名', value: 50},{name: '嘉兴', value: 51},{name: '长春', value: 51},{name: '胶州', value: 52},{name: '银川', value: 52},{name: '张家港', value: 52},{name: '三门峡', value: 53},{name: '锦州', value: 54},{name: '南昌', value: 54},{name: '柳州', value: 54},{name: '三亚', value: 54},{name: '自贡', value: 56},{name: '吉林', value: 56},{name: '阳江', value: 57},{name: '泸州', value: 57},{name: '西宁', value: 57},{name: '宜宾', value: 58},{name: '呼和浩特', value: 58},{name: '成都', value: 58},{name: '大同', value: 58},{name: '镇江', value: 59},{name: '桂林', value: 59},{name: '张家界', value: 59},{name: '宜兴', value: 59},{name: '北海', value: 60},{name: '西安', value: 61},{name: '金坛', value: 62},{name: '东营', value: 62},{name: '牡丹江', value: 63},{name: '遵义', value: 63},{name: '绍兴', value: 63},{name: '扬州', value: 64},{name: '常州', value: 64},{name: '潍坊', value: 65},{name: '重庆', value: 66},{name: '台州', value: 67},{name: '南京', value: 67},{name: '滨州', value: 70},{name: '贵阳', value: 71},{name: '无锡', value: 71},{name: '本溪', value: 71},{name: '克拉玛依', value: 72},{name: '渭南', value: 72},{name: '马鞍山', value: 72},{name: '宝鸡', value: 72},{name: '焦作', value: 75},{name: '句容', value: 75},{name: '北京', value: 79},{name: '徐州', value: 79},{name: '衡水', value: 80},{name: '包头', value: 80},{name: '绵阳', value: 80},{name: '乌鲁木齐', value: 84},{name: '枣庄', value: 84},{name: '杭州', value: 84},{name: '淄博', value: 85},{name: '鞍山', value: 86},{name: '溧阳', value: 86},{name: '库尔勒', value: 86},{name: '安阳', value: 90},{name: '开封', value: 90},{name: '济南', value: 92},{name: '德阳', value: 93},{name: '温州', value: 95},{name: '九江', value: 96},{name: '邯郸', value: 98},{name: '临安', value: 99},{name: '兰州', value: 99},{name: '沧州', value: 100},{name: '临沂', value: 103},{name: '南充', value: 104},{name: '天津', value: 105},{name: '富阳', value: 106},{name: '泰安', value: 112},{name: '诸暨', value: 112},{name: '郑州', value: 113},{name: '哈尔滨', value: 114},{name: '聊城', value: 116},{name: '芜湖', value: 117},{name: '唐山', value: 119},{name: '平顶山', value: 119},{name: '邢台', value: 119},{name: '德州', value: 120},{name: '济宁', value: 120},{name: '荆州', value: 127},{name: '宜昌', value: 130},{name: '义乌', value: 132},{name: '丽水', value: 133},{name: '洛阳', value: 134},{name: '秦皇岛', value: 136},{name: '株洲', value: 143},{name: '石家庄', value: 147},{name: '莱芜', value: 148},{name: '常德', value: 152},{name: '保定', value: 153},{name: '湘潭', value: 154},{name: '金华', value: 157},{name: '岳阳', value: 169},{name: '长沙', value: 175},{name: '衢州', value: 177},{name: '廊坊', value: 193},{name: '菏泽', value: 194},{name: '合肥', value: 229},{name: '武汉', value: 273},{name: '大庆', value: 279}];var geoCoordMap = {'海门':[121.15,31.89],'鄂尔多斯':[109.781327,39.608266],'招远':[120.38,37.35],'舟山':[122.207216,29.985295],'齐齐哈尔':[123.97,47.33],'盐城':[120.13,33.38],'赤峰':[118.87,42.28],'青岛':[120.33,36.07],'乳山':[121.52,36.89],'金昌':[102.188043,38.520089],'泉州':[118.58,24.93],'莱西':[120.53,36.86],'日照':[119.46,35.42],'胶南':[119.97,35.88],'南通':[121.05,32.08],'拉萨':[91.11,29.97],'云浮':[112.02,22.93],'梅州':[116.1,24.55],'文登':[122.05,37.2],'上海':[121.48,31.22],'攀枝花':[101.718637,26.582347],'威海':[122.1,37.5],'承德':[117.93,40.97],'厦门':[118.1,24.46],'汕尾':[115.375279,22.786211],'潮州':[116.63,23.68],'丹东':[124.37,40.13],'太仓':[121.1,31.45],'曲靖':[103.79,25.51],'烟台':[121.39,37.52],'福州':[119.3,26.08],'瓦房店':[121.979603,39.627114],'即墨':[120.45,36.38],'抚顺':[123.97,41.97],'玉溪':[102.52,24.35],'张家口':[114.87,40.82],'阳泉':[113.57,37.85],'莱州':[119.942327,37.177017],'湖州':[120.1,30.86],'汕头':[116.69,23.39],'昆山':[120.95,31.39],'宁波':[121.56,29.86],'湛江':[110.359377,21.270708],'揭阳':[116.35,23.55],'荣成':[122.41,37.16],'连云港':[119.16,34.59],'葫芦岛':[120.836932,40.711052],'常熟':[120.74,31.64],'东莞':[113.75,23.04],'河源':[114.68,23.73],'淮安':[119.15,33.5],'泰州':[119.9,32.49],'南宁':[108.33,22.84],'营口':[122.18,40.65],'惠州':[114.4,23.09],'江阴':[120.26,31.91],'蓬莱':[120.75,37.8],'韶关':[113.62,24.84],'嘉峪关':[98.289152,39.77313],'广州':[113.23,23.16],'延安':[109.47,36.6],'太原':[112.53,37.87],'清远':[113.01,23.7],'中山':[113.38,22.52],'昆明':[102.73,25.04],'寿光':[118.73,36.86],'盘锦':[122.070714,41.119997],'长治':[113.08,36.18],'深圳':[114.07,22.62],'珠海':[113.52,22.3],'宿迁':[118.3,33.96],'咸阳':[108.72,34.36],'铜川':[109.11,35.09],'平度':[119.97,36.77],'佛山':[113.11,23.05],'海口':[110.35,20.02],'江门':[113.06,22.61],'章丘':[117.53,36.72],'肇庆':[112.44,23.05],'大连':[121.62,38.92],'临汾':[111.5,36.08],'吴江':[120.63,31.16],'石嘴山':[106.39,39.04],'沈阳':[123.38,41.8],'苏州':[120.62,31.32],'茂名':[110.88,21.68],'嘉兴':[120.76,30.77],'长春':[125.35,43.88],'胶州':[120.03336,36.264622],'银川':[106.27,38.47],'张家港':[120.555821,31.875428],'三门峡':[111.19,34.76],'锦州':[121.15,41.13],'南昌':[115.89,28.68],'柳州':[109.4,24.33],'三亚':[109.511909,18.252847],'自贡':[104.778442,29.33903],'吉林':[126.57,43.87],'阳江':[111.95,21.85],'泸州':[105.39,28.91],'西宁':[101.74,36.56],'宜宾':[104.56,29.77],'呼和浩特':[111.65,40.82],'成都':[104.06,30.67],'大同':[113.3,40.12],'镇江':[119.44,32.2],'桂林':[110.28,25.29],'张家界':[110.479191,29.117096],'宜兴':[119.82,31.36],'北海':[109.12,21.49],'西安':[108.95,34.27],'金坛':[119.56,31.74],'东营':[118.49,37.46],'牡丹江':[129.58,44.6],'遵义':[106.9,27.7],'绍兴':[120.58,30.01],'扬州':[119.42,32.39],'常州':[119.95,31.79],'潍坊':[119.1,36.62],'重庆':[106.54,29.59],'台州':[121.420757,28.656386],'南京':[118.78,32.04],'滨州':[118.03,37.36],'贵阳':[106.71,26.57],'无锡':[120.29,31.59],'本溪':[123.73,41.3],'克拉玛依':[84.77,45.59],'渭南':[109.5,34.52],'马鞍山':[118.48,31.56],'宝鸡':[107.15,34.38],'焦作':[113.21,35.24],'句容':[119.16,31.95],'北京':[116.46,39.92],'徐州':[117.2,34.26],'衡水':[115.72,37.72],'包头':[110,40.58],'绵阳':[104.73,31.48],'乌鲁木齐':[87.68,43.77],'枣庄':[117.57,34.86],'杭州':[120.19,30.26],'淄博':[118.05,36.78],'鞍山':[122.85,41.12],'溧阳':[119.48,31.43],'库尔勒':[86.06,41.68],'安阳':[114.35,36.1],'开封':[114.35,34.79],'济南':[117,36.65],'德阳':[104.37,31.13],'温州':[120.65,28.01],'九江':[115.97,29.71],'邯郸':[114.47,36.6],'临安':[119.72,30.23],'兰州':[103.73,36.03],'沧州':[116.83,38.33],'临沂':[118.35,35.05],'南充':[106.110698,30.837793],'天津':[117.2,39.13],'富阳':[119.95,30.07],'泰安':[117.13,36.18],'诸暨':[120.23,29.71],'郑州':[113.65,34.76],'哈尔滨':[126.63,45.75],'聊城':[115.97,36.45],'芜湖':[118.38,31.33],'唐山':[118.02,39.63],'平顶山':[113.29,33.75],'邢台':[114.48,37.05],'德州':[116.29,37.45],'济宁':[116.59,35.38],'荆州':[112.239741,30.335165],'宜昌':[111.3,30.7],'义乌':[120.06,29.32],'丽水':[119.92,28.45],'洛阳':[112.44,34.7],'秦皇岛':[119.57,39.95],'株洲':[113.16,27.83],'石家庄':[114.48,38.03],'莱芜':[117.67,36.19],'常德':[111.69,29.05],'保定':[115.48,38.85],'湘潭':[112.91,27.87],'金华':[119.64,29.12],'岳阳':[113.09,29.37],'长沙':[113,28.21],'衢州':[118.88,28.97],'廊坊':[116.7,39.53],'菏泽':[115.480656,35.23375],'合肥':[117.27,31.86],'武汉':[114.31,30.52],'大庆':[125.03,46.58]};var convertData = function (data) {var res = [];for (var i = 0; i < data.length; i++) {var geoCoord = geoCoordMap[data[i].name];if (geoCoord) {res.push({name: data[i].name,value: geoCoord.concat(data[i].value)});}}return res;};option = {title: {text: '全国主要城市空气质量 - 百度地图',subtext: 'data from PM25.in',sublink: 'http://www.pm25.in',left: 'center'},tooltip : {trigger: 'item'},bmap: {center: [104.114129, 37.550339],zoom: 5,roam: true,mapStyle: {styleJson: [{'featureType': 'water','elementType': 'all','stylers': {'color': '#d1d1d1'}}, {'featureType': 'land','elementType': 'all','stylers': {'color': '#f3f3f3'}}, {'featureType': 'railway','elementType': 'all','stylers': {'visibility': 'off'}}, {'featureType': 'highway','elementType': 'all','stylers': {'color': '#fdfdfd'}}, {'featureType': 'highway','elementType': 'labels','stylers': {'visibility': 'off'}}, {'featureType': 'arterial','elementType': 'geometry','stylers': {'color': '#fefefe'}}, {'featureType': 'arterial','elementType': 'geometry.fill','stylers': {'color': '#fefefe'}}, {'featureType': 'poi','elementType': 'all','stylers': {'visibility': 'off'}}, {'featureType': 'green','elementType': 'all','stylers': {'visibility': 'off'}}, {'featureType': 'subway','elementType': 'all','stylers': {'visibility': 'off'}}, {'featureType': 'manmade','elementType': 'all','stylers': {'color': '#d1d1d1'}}, {'featureType': 'local','elementType': 'all','stylers': {'color': '#d1d1d1'}}, {'featureType': 'arterial','elementType': 'labels','stylers': {'visibility': 'off'}}, {'featureType': 'boundary','elementType': 'all','stylers': {'color': '#fefefe'}}, {'featureType': 'building','elementType': 'all','stylers': {'color': '#d1d1d1'}}, {'featureType': 'label','elementType': 'labels.text.fill','stylers': {'color': '#999999'}}]}},};//option && myChart.setOption(option);//console.log(option);let mapInstance;function renderChart() {const renderedInstance = echarts.getInstanceByDom(mapRef.current);if (renderedInstance) {mapInstance = renderedInstance;} else {mapInstance = echarts.init(mapRef.current);}mapInstance.setOption(option);};renderChart();//console.log(mapInstance);/*return () => {mapInstance && mapInstance.dispose();};*/},[]);//style={{backgroundColor:theme.palette.background,flexGrow:1,color:theme.palette.text.primary}}return (<div><div style={{width: 1200, height: 800, }} id="m" ref={mapRef}></div></div>);};//export default exfn;

2、E:\py\react\jlrcmap\public\index.html(相当于底层模板)在引入ak：

<!DOCTYPE html>
<html lang="en"><head><meta charset="utf-8" /><link rel="icon" href="%PUBLIC_URL%/favicon.ico" /><meta name="viewport" content="width=device-width, initial-scale=1" /><meta name="theme-color" content="#000000" /><metaname="description"content="Web site created using create-react-app"/><link rel="apple-touch-icon" href="%PUBLIC_URL%/logo192.png" /><!--manifest.json provides metadata used when your web app is installed on auser's mobile device or desktop. See https://developers.google.com/web/fundamentals/web-app-manifest/--><link rel="manifest" href="%PUBLIC_URL%/manifest.json" /><!--Notice the use of %PUBLIC_URL% in the tags above.It will be replaced with the URL of the `public` folder during the build.Only files inside the `public` folder can be referenced from the HTML.Unlike "/favicon.ico" or "favicon.ico", "%PUBLIC_URL%/favicon.ico" willwork correctly both with client-side routing and a non-root public URL.Learn how to configure a non-root public URL by running `npm run build`.--><title>React App</title></head><body><noscript>You need to enable JavaScript to run this app.</noscript><script type="text/javascript" src="http://api.map.baidu.com/api?v=2.0&ak=cARYiiCL8CwSHEzeHIa5O8UY"></script><div id="root"></div><!--This HTML file is a template.If you open it directly in the browser, you will see an empty page.You can add webfonts, meta tags, or analytics to this file.The build step will place the bundled scripts into the <body> tag.To begin the development, run `npm start` or `yarn start`.To create a production bundle, use `npm run build` or `yarn build`.--></body>
</html>

参考：

https://blog.csdn.net/gdp12315_gu/article/details/54671025

https://www.cnblogs.com/class1/p/13691867.html

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